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Old 02-03-2018, 09:49 PM   #1
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Pebbles shower floor

Hi every one..
I did a shower where the homeowner wanted pebbles on the shower floor, that was the first shower floor where I used pebbles, and at that time I didn't have much info about grouting pebbles. Do After About 6 Months OF finished That SHOWER Some Cracks developed On the grout causing the shower floor Look wet for Long time. At the time I grouted the pebbles I used mapei sanded grout, and grout sealer.

So I had to remove the pebbles and redo the shower pan as a warranty, now I'm about to grout pebbles again but I'm not sure what type of grout to use, I've heard that epoxy grout is the best in this cases due to the big grout spaces between each pebble.

Any suggestions? Thanks in advance
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Old 02-03-2018, 10:57 PM   #2
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Spectralock, Fusion Pro, or Flexcolor will all work very well.

For rounded pebble floors, the pitch should be 1/2" per foot to allow better surface drainage.

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Old 02-04-2018, 06:06 AM   #3
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Don't use flex color to grout the pebbles. Mapei says that the joint width on pebbles exceeds the capability of Flexcolor.

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Old 02-04-2018, 12:29 PM   #4
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With Mapei, I prefer to use UltraColor Plus over FlexColor CQ for pebbles. Or any natural stone, for that matter.

FlexColor CQ will shrink down considerably on the wide spacing between stones.

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